A Naturally Renormalized Quantum Field Theory

Asymptotic Completeness for a Renormalized Non-relativistic Hamiltonian in Quantum Field Theory: the Nelson Model

2 Quantum field theory as a functor

The principle of local covariance which was recently introduced admits a generally covariant formulation of quantum field theory. It allows a discussion of structural properties of quantum field theory as well as the perturbative construction of renormalized interacting models on generic curved backgrounds and opens in principle the way towards a background independent perturbative quantization...

Double-Scaling Limit of a Broken Symmetry Quantum Field Theory

The Ising limit of a conventional Hermitian parity-symmetric scalar quantum field theory is a correlated limit in which two bare Lagrangian parameters, the coupling constant g and the negative mass squared −m2, both approach infinity with the ratio −m2/g = α > 0 held fixed. In this limit the renormalized mass of the asymptotic theory is finite. Moreover, the limiting theory exhibits universal p...

Renormalized Higher Powers of White Noise (rhpwn) and Conformal Field Theory

Abstract. The Virasoro–Zamolodchikov Lie algebra w∞ has been widely studied in string theory and in conformal field theory, motivated by the attempts of developing a satisfactory theory of quantization of gravity. The renormalized higher powers of quantum white noise (RHPWN) ∗-Lie algebra has been recently investigated in quantum probability, motivated by the attempts to develop a nonlinear gen...

Tachyon Condensation and Background Independent Superstring Field Theory

We study quantum corrections at the one loop level in open superstring tachyon condensation using the boundary string field theory (BSFT) method. We find that the tachyon field action has the same form as at the disc level, but with a renormalized effective coupling λ = g s e −T /4 (g s is the renormalized dimensionless closed string coupling, e /4 is the tachyonic field expectation value) and ...